Symptoms
- Battery life is noticeably shorter than when new
- Headphones show full charge but die within an hour or two
- Battery drains even when not in use or in the case
- Case battery also seems to drain unusually fast
Likely causes
- CommonNatural battery capacity degradation from age and charge cyclesRechargeable batteries lose capacity over time, and after 1–2+ years of daily use, shorter battery life is expected.
- CommonNoise cancelling or transparency mode left on, which uses more powerThese features draw significantly more battery than standard playback.
- PossibleHeadphones not properly turning off or entering standbyA stuck power state can keep the headphones actively draining battery even when 'off' or in the case.
- PossibleFirmware bug affecting power managementSome firmware versions have had known bugs causing excess battery drain, later fixed in updates.
- Less commonCase not properly charging the earbuds or itself degradedIf the case's own battery is failing, it may not be delivering a full charge to the earbuds.
What to do
- Turn off noise cancelling or transparency mode when not specifically needed, since these use extra power.
- Confirm the headphones or earbuds are fully powering off (not just going idle) when not in use, per the manufacturer's indicator lights.
- Check for a firmware update in the companion app, since battery-related bugs are commonly addressed in updates.
- Fully drain the battery to empty, then fully charge without interruption, which can sometimes recalibrate battery reporting.
- Check the case's own battery level (if it has a separate charge) to make sure it's not the case failing to deliver charge.
- Compare current battery life to the manufacturer's original rated battery life to gauge how much decline is normal for the age of the device.
- If the headphones are 2+ years old with heavy daily use, treat this as expected battery aging rather than a defect.
When to call a pro
If battery life has dropped drastically within the first year of use, contact the manufacturer's support, since this may be covered under warranty as a defect rather than normal wear.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.